Its contemporaneous success at the time was tied to the rise of the late 1960s counterculture, which was somewhat of a lucky break.
As an asde, I've always loved the rotation-match space docking sequence: https://twitter.com/Doomlaser/status/981172150001373184 — that is the kind of engineering choreography that SpaceX's recent synchronized double rocket landing reminded me of.
And one of my early creative career highlights was convincing everyone at Tapulous to give me the go ahead to do a 7 and a half minute tribute to the 2001 stargate sequence as the final boss in Tap Tap Dance, set to Phantom Pt. II by Justice: https://www.youtube.com/watch?v=1-JLnyHT7IU#t=26s